Sheet-glass-drawing furnace



Dec. 15, 1925 LSBGJifiE G. BRASSEUR El AL SHEET GLASS DRAWING FURNACEFiled Aug. 15. 192.3 s Sheets-Sheah 1 9 IN VENTO 125.-

GB ORGES BRASSE UR.

' TIDE ANDRIS TTORNEK Dec. 15,1925.

G BRASSEUR AL 0 o o o o o o0 Q O O Q o o o 0o ece 15,1925. 1,566,181

G. BRASSEUR ET AL SHEET GLASS DRAWING FURNACE Filed Aug. 15. 1923 3Sheets-Sheei: 5

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Patented, Dec. 15, 1925.

UNITED sures 1,566,181 PATENT m m.

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Application fled August is, 1923. SerialNo. 857,565.

To all whom it may concern:

Be it known that we, Gnonons Bmssnun an'd Ams'rmn ANDRIS, subjects ofthe King of Belgium, and residents of Charleroi, Belgium, have inventedcertain new and useful Improvements in Sheet-Glass-Drawing Furnaces, ofwhich thefollowing is aspecification.

Our present invention has reference to a novel sheet lass drawingfurnace or oven comprising three compartments, the central one of which,wherein the molten glass to be drawn is-containd, is separated from thetwo others, serving to heat the molten glass by thick fireproof'stones.In this Way the molten glass will be held in a regular viscous conditionfrom bottom to top, whereb cords or flutings will be avoided in theished glass plates.

According to the invention the furnace will not be heated at thebottomor to as usuall but on the entire lateral perip ery where y theviscous condition of the molten lass will be maintained more uniform.

nother important feature of the furnace according to .the inventionresides in the fact that the drawing operation will be considerably simlified and effected by vertical bevelled or -shaped grooves in the wallsof the drawing compartment, a glass drawing or fetching plate dippedinto the molten glass bringing the glass into said" groove and thuspermitting of'drawing same continuously in any desired thickness. Inorder to maintain the glass sheets drawn at the same width, the rimsthereof will be cooled b a suitable circulation of cold water which a soforms a part of my invention.

In the drawings:

Fi 1 is a horizontal section of the glass drawing furnace having threecompartments.

Fig. 2 is a vertical section of the drawing compartment shown in Fig. 1.

Fig. 3 is a vertical section on line III--III in Fig. 1.

Figs. 4 andfi show details.

Fig. 6 is a diagrammatical 'view of the drawing machine.

The. drawing furnace proper comprises three compartments 1, 2, 3separated from each other by fireproof stones 4.

The central compartment 2 which receives the molten lass is connected bya lower conduit '5 to t e glass melting-oven 6. Thus the melting oven 6and compartment '2 communicate with each other in the manner ofcommunicating vessels.

The molten glass supplied through the conduit 5 is held in a regularviscous condition, from bottom to top by the heating effected by theadjacent compartments 1 and 3, 7 designating air-valves and 8gas-valves.

The gas supplied by a gas-producer passes through the conduit 9 to thevalves 8 and com artments 1 and 3. v f I T e fireproof walls 10 and 11of the compartment 2 are provided with vertical V- shaped grooves 12extending over the entire height thereofj An'iron plate 13 (Fi 5) dippedinto the compartment 2 and sli abl engaging said grooves 12, serves tofetc the drawing operation. As said plate is raised, the molten glasswill rise in said grooves towards therollers of the drawing machine. Thesheet or plate ofglass rises continuously and the sheet or plateproduced has no cords or flutings.

A water circulation tank 14 'is provided to cool the walls lQand 11 andsecure a constant width to-the plates, whilst a coil, not shown, isprovided to cool the glass plate itself.

The drawing machine proper may be of any desired design. For instance itmaybe formed of a series of asbestos rollers 15 actuated by an engine16.

The melting oven 6 is arranged to supply 1 any desired number of unitssuch as 1, 2, 3, for instance two or three on each side and at thefront.

Having now fully described our said incompartment in sheet form with thee'd sthereof in contact with the non-heated si es of the compartment.

In testimony whereof we have hereunto set our-hands.

GEORGES BRASSEUR. ARISTIDE ANDRIS.

